Burglarproof lock



July 21, 1931. H. KELLS ET AL 1,815,314

BURGLARPROOF LOCK Filed Maz ch 18, 1927 2 Sheets-Sheet l MAJ/(ll;

C L ed 1 M July 21, 1931. H. KELLS ET AL 1,815,314

BURGLARPROOF LOCK Filed March 18, 1927 2 Sheets-Sheet 2 a i 1% m W Patented July 21, 1931 UNHTED STATES PATENT OFFICE HAROLD KELLS AND CHARLES F. IYIEILINK, OF TOLEDO, OHIO, ASSIGNORS TO THE MEILINK STEEL SAFE COMPANY, OF TOLEDO, OHIO, A COREORATEON OF OHIO BURGLARPBOOF Application filed March 18, 1927.

This invention relates to bolt holding devices.

This invention has utility when incorporated in connection with bolt mechanism for the closures of safes and vaults, as a protection against unauthorized forcing thereof.

Referring to the drawings:

Fig. 1 is a front View of a safe of a characterto which the invention herein may be adapted;

Fig. 2 is a fragmentary view, on an enlarged scale, of the doors of Fig. 1 with the front plates removed;

Fig. 3 is an enlarged View on the line III-III, Fig. 2, looking in the direction of the arrow;

Fig. 4 is a detail view in perspective of the tension maintenance or take-up means for the holding out against operation of the device hereof;

Fig. 5 is a fragmentary view from within the closed safe of Fig. 1 in the region of the operating spindles;

Fig. 6 is a plan View, on an enlarged scale, of the locking bolt and its guide as shown in Fig. 5;

Fig. 7 is a side elevation of the bolt and guide of Fig. 6; v

Fig. 8 is a section on the line VIII-VIII, Fig. 6, with features of the device hereof in position to permit free operation of the bolt;

Fig. 9 is a view similar to- Fig. 8, but with the device hereof being tripped; and

Fig. 10 shows the slide as reset.

Safe 1 is shown as having an opening 2 into which may be swung doors 3, 4, upon SltlOlleCl by guides 40 having anchoring hinges 5 for closing the opening 2. The door 3 is provided with operating handle 6 as the nori'ual actuator of the bolt mechanisms for rocking spindle 7 having ,arms 8, 9. From the arm 9 upwardly extends link 10 having pivotal connection 11 extending through slot 12 to engage bolt 13 and thrust such bolt upwardly into locking position, or pull it downwardly into releasing position. The spindle arm 8 has depending therefrom link 14 extending to a similarpivotal connection 11. This link 14 is thus efiective for operating bolt 15 simultaneously and op- LOCK Serial No. 176,314.

positely to the operation of the bolt 13. The arm 9 has a pin in slot 16 of slide 17. This slide 17 is directed by slots 18, 19, riding on pins 20. Throwing of this handle 6 to shift the bolts 13, 15, into locking position withdraws this slide 17 from pocket or bolt recess 21 in the door frame, into which pocket may be thrown the bolt 28 in normal operation of the bolt mechanism by the operation of the handle 6.

Companion door 4 has handle 22 as the normal actuator of the bolt mechanisms for operating spindle 23 having arms 24, 25 in the manual throw of the locking bolts for the sa fe doors. The arm 24 is provided with slot 26 engaging pivot pin 11 on bolt 28 for thrusting such bolt horizontally into the way cleared at the opening 21 upon the retraction of the slide 17 when the doors 3, 4, are in closed position. he arm 25 carries pivot pin 29 from which upwardly extends lever 30 and downwardly extends lever 31. The lever 30 has fulcrum 32 and extends therebeyond to have pivotal connection 11 to bolt 33. The depending lever 31 has fulcrum 32 and extends to have pivotal connection 11 to bolt 34. Fixed with the spindle 23 is arm 35 having recess 36 into which look bolt 37 may be thrust from the lock housing 38 as controlled by spindle 39. lVhen this look bolt 37 is thrust into the recess 36, the spindle 23 may not be operated to withdraw the bolts 28, 33, 34. Because the bolt 28 is thrust against the slide 17, spindle 7 may not be operated to withdraw the bolts 13, 15.

The respective bolts herein are fixedly poflanges 41 assembled with the door frame at the opening 2 from the door through which the respective bolts are thrust. The guides 40, as extending in'the plane of the doors from these flanges 41, are further anchored by bracket 42 with the door. These flanges 41 and the brackets 42 may have spot-welding anchored connection in this bolt guide assembly with the doors. The bolt guide proper is herein shown as having a rearward extension 43 of tubular form and in aligned rearward direction from the bolt. Nortill mally disposed in the extension 43, which is shown as slightly offset from the bolt guide 40, is an interceptor member or shiftable means in the form of a plunger or block which may be discharged from the extension 43 into the bolt housing or guide to intercept and prevent any retraction of the thrown bolt 28 into the housing 40. This block 44 as positioned in the extension 43 is located to have compression helical spring 45 on the side thereof remote from the bolt and is thus retracted clear of normal operation of the bolt 28. The extension 43 is shown as having openings 46, 47, through which may extend depending lugs 48, 49, of slide yieldably held against this extension 43 by spring 51. This spring 51 has one end anchored between the bracket 42 and the extension 43 with an upward bow portion therefrom extending back to be anchored with the slide 50. This slide 50 is shown as having a flange 52 with which may engage tension means 53, as a wire cable. This cable as extending from the flange 52 may pass about guides 54 fixed ith the extension 43. Upon slacking of the cable 53, the spring 45 shifts the slide 50 from the position shown in Fig. 8 to the position shown in Fig. 9. In the instance of the door 4, the reach of this extension means 53 fixed with the uide 54 u ward extends about fixed pin 55 inwardly from washer 56 loose on this pm 55. This washer 56 rests against the arm 35. From this pin 55 fixed with the door 4 the tension means 53 extends or, in,

" past the crank plate carrying the arms 24, 25,

to fixed pin 57 also anchored with the door 4, thence upwardly to L-block 58 carrying bolt 59 extending therefrom to companion L-block 58 to which the cable or tension means is connected. Nut 60 coacting with the bolt 59 serves to permit adjustment for a holding tension effectiveness for this cable This tension means then in its further passage upward, extends about guide 54 to engage flange 52 of the slide 50 for the bolt 33.

From the flange 52 of the slide 50 the tension means 53 about the guide 54 as to its reach downward, extends from the bolt 28 and about guide 54 to flange 52 of the slide 50 from the bolt 34.

As to this tension means for the bolts of the door 4, any tampering with this door, which may tend to force the arm 35 inwardly from the front plate of the door or thrust the spindle 23 or its arm 24 inwardly, will thus urge the flexible resisting or tension means 53 to slide off the pin 56 or 57 and thereby allow slackening of this tension means The inclined projection 48 of this normally holding catch is then thrust out of holding position by the spring In this movement there is ti ting of the slide 50 to have the lugs 48, 49 clear of the intercepter plunger or block 44. The spring 45 is thus furthermore effective for shooting this intercepter block 44 toward the bolt in the guide 40. This intercepter block 44 pas ses the slide 50, the spring 51, holding this sl de 50 so directs such slide that the depending projection 49 is so located that the intercepter block 44 may not be retired into the extension Accordingly, as to each of the bolts 33, 34, 28, thus having their intercepter blocks released, there is a burglar proof door holding against unwarranted opening. The tension means as mounted together with the members 48, 49, 50, act as a catch to hold the block in the extension 43 against the resistance of the spring 45, which on release serves to render the block operative. The handles 6 and 2-2 are normal actuators for the bolts 28.

The tension means 53 on door 3 passes about pins 61, 62, and pin 20, with washer 63 back thereof. This washer 63 is inwardly from the slide 17 at the slot 18 so that shifting of the slide 17 inward, will, through this washer 63, thrust the tension means 53 oil the pin 20.

The location of the tension means 53 is such that any forcing of the spindle 7 or the slide 17 rearwardly from the front face of the door 3 will cause this tension means 53 to be forced off one or more of the pins 61, 62, 20, thus slackening the tension means 53 to permit the compression spring 45 to throw the intercepter block 44 into position held against retraction so that these intercepter blocks preclude any withdrawal of the bolts 13, 15, even by rocking the spindle 7 for pull action on the links 10, 14.

lVhat is claimed and it is desired to secure by Letters Patent is:

l. A wall having an opening, a closure for the opening, a plurality of bolts movable to locking position relatively to the closure and wall for anchoring the closure in the opening, bolt controlling mechanism for operating the bolts to manual locking position, shiftable means trippable to direct shifting of the means into bolt locking position directly for a plurality of bolts, and flexible resisting means for overcoming the shiftable means for holding said shiftable means clear of the bolts, said resisting means being susceptible to disturbance upon tampering with the controlling mechanism for thus releasing the shiftable means to have said means effective for directing and holding directly a plurality of the bolts in locking position.

2. Locking mechanism including a bolt, a normal actuator for the bolt, a guide into which the bolt may be retracted by said actuator, a block movable axially of the bolt, into alignment with the bolt against bolt retraction into the guide to oppose said actuator, and holding means for the block normally rendering the block inoperative.

3. Looking mechanism including a bolt, a

normal actuator for the bolt, a guide into which the bolt may be retracted and including a housing extension, a block in said extension, means normally urging the block into position against bolt retraction into the guide by said actuator, and holding means for the block normally rendering the block inoperative.

4. Locking mechanism including a bolt, a

normal actuator for the bolt, a guide into which the bolt may be retracted and including a housing extension, a block in said extension, a compression spring normally urging the block into position against bolt retraction into the guide, and holding means engaging the block to hold the block in spring compressing position for thus normally rendering the block inoperative and thereby leaving the bolt free for actuator operation of the bolt.

5. Locking mechanism including a bolt, a normal actuator for the bolt, a guide into which the bolt may be retracted and including a housing extension, a block in said extension, a compression spring normally urging the block into position against bolt retraction into the guide by said actuator, and movable holding means protruding into the guide between the block and bolt to hold the block in spring compressing position for thus normally rendering the block inoperative.

6. Locking mechanism including a bolt, a normal actuator for the bolt, a guide into which the bolt may be retracted and includ ing a housing extension, a block in said extension, a compression spring normally urging the block into position against bolt retraction into the guide by said actuator, movable holding means protruding into the guide between the block and bolt, and tension means for holding the holding means and maintaining the block in spring compressing position for thus normally rendering the block inoperative.

7 Locking mechanism including a bolt, a normal actuator for the bolt, a guide into which the bolt may be retracted and including a housing extension, a block in said extension, a compression spring normally urg ing the block into position against bolt retraction into the guide by said actuator, movable holding means protruding into the guide between the block and bolt, and tension means extending to be disturbed by locking mechanism shifted transversely of the extent of the bolt for thereby slackening the tension means for permitting releasing of the block.

8. A safe door, a plurality of locking bolts therefor, a rotatable spindle for operating the bolts to and from looking position, guides for the bolts, block means for the respective bolts effective for holding the bolts in locking position against retraction into the guides by rotation operation of said spindle, and tension means between the several blocks and In witness whereof we aflix our signatures.

HAROLD KELLS. CHARLES F. MEILINK. 

